Custom Mylar Bag Printing: Structures, Finishes and Child-Resistant Options
How to design and order custom printed Mylar bags — laminate structures, print methods, zipper types, child-resistant compliance and MOQ explained.
Mylar bags (technically PET/AL/PE or BOPP/AL/PE laminates) offer outstanding oxygen and moisture barrier properties. They are used for cannabis, food, nutraceuticals and pet treats. BestPackFactory manufactures custom printed Mylar bags in Shenzhen.
What Is a Mylar Bag?
"Mylar" is a brand name for biaxially oriented PET film. In packaging, "Mylar bag" has become a generic term for any high-barrier foil pouch. The actual structure is typically: BOPP 20 µm / Aluminium foil 7–9 µm / PE 80 µm. Oxygen transmission rate (OTR): <0.1 cc/m²/day.
Common Structures by Application
| Application | Structure | Key Property |
|---|---|---|
| Cannabis flower | BOPP/AL/PE + smell-proof | Odour barrier, CR zipper |
| Coffee beans | BOPP/AL/PE + degassing valve | CO₂ outgas, oxygen barrier |
| Beef jerky / snacks | BOPP/AL/PE | Moisture barrier, resealable |
| Nutraceuticals | PET/AL/PE | Light barrier, tamper evident |
Printing Methods
Rotogravure: highest quality, 8–10 colour, standard for runs over 50,000 bags. Flexo: 4–8 colour, suitable for 10,000–50,000 bags. Digital: full colour, no plates, suitable for 500–9,999 bags (higher per-unit cost).
Zipper and Closure Options
- Standard zip-lock reseal
- Child-resistant (CR) zipper — compliant with CPSC 16 CFR 1700.20 and California Prop 65
- Press-to-close (PTC) zipper — easy open, moderate child resistance
- Heat-seal only — for one-time use, maximum barrier
MOQ and Lead Times
Digital print: MOQ 500 bags, 10–12 days. Flexo: MOQ 10,000 bags, 20–25 days. Gravure: MOQ 50,000 bags, 25–30 days. BestPackFactory provides free dieline and free digital print proof.
Get a Free Factory Quote
BestPackFactory manufactures custom packaging from our Shenzhen factory. MOQ 500 PCS, free dieline, worldwide shipping. Response within 24 hours.
Email: lisa@colorprintingpackage.com | WhatsApp: +86 158 8653 0985
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